Self and william h



thtitrd (States me man;

WILLIAM SELF AND WILLIAM II. WORDEN, 0F SAME PLACE.

Letters Patent No. 104,265, lated June 14, 1870.

HIGH AND. LOW-WATER INDICATOR.

wwe-* The Schedule referred to 'n these ALetters Patent :md making part of the same.

To all whom Iit may concern:

Be itlmown that I, WILLIAMBUTrEnmnLn, ofMadison, in the county of Dane and State ot Wisconsin, have invented a new and useful High and Low-water Indicator and Steam-Alarm; -and I do hereby declare the following to be a full, clear, and exact description thereof', which will enable others skilled in the art to which my inventionappertains to make and use the same, reference being had to the accompanying drawing forming part of this specification.

Figure 1 is a side elevation of my improved indicator, the rear portion of the case being removed to show the interior.

Figure 2 is a transverse in the line x x, fig. 1.

Figure 3 is aidetachcd plan view ot the lever and pinions by which the index-finger of the register is operated.

Similar' letters of reference indicate. corresponding parts in the several figures of the drawing.

My invention consists- First, in the combination of parts with the rotary valve, whereby the height of the water in the boiler is indicated upon a register, while the valve simulta neousl y permits the escape of steam to a whistle to dcnote a high 'or low stage of water.

Secondly, in the combination of two floats, and their levers and connecting-arms, with the case and the slotted valve, for the purpose of rendering the valve -Inore sensitive and perfect in its operation.`

Thirdly, in the peculiar construction ofthe case of the indicator to receive the valves and steam-ports within a small space, and whereby two tl'oats are ernployed within a small compass to operate thelvalvc, for determining the height of water in the boiler.

Lastly, in the arrangement of parts of the device to be hereinafter more fully described.

In the accompanying drawing` A is the metallic case or' shell of my improved indicator, secured to a steam-boiler in such a manner as to eommudicate with the water and steam-spaee of the same.

vertical section of the same,

The shell A is constructed in two parts, so formed that when secured together, an annular space, B, is formed between them, as shown in fig. 1.

G C are spherical ioats, of a size corresponding to the annular space B, and pivoted .by the arms I), which cross eachother, to the center E of the shell, as'` shown.

F is a' boss cast in the vupper portion of the shell, and projecting into the annular space B.

Thisboss is perforated centrally to receive the stem G of thevalve H.

'T h.e.valve-stem passes outward through the boss, and through a nut, I, attached tothe outer face of the same.

The valve H upon the inner end of the stem is con* nccted eccentrically to the two crossed arms D, by means of the pivoted connecting-1ods J and couscquently rotated within its seat as the floats rise and fall.

K is the register shown in sect-ion, `fig. 2, provided with .the graduated dial L and index-linger M, in the usual manner, the latter heilig hung upon the central shaft N.

O is a lever extending within theregister, and piv oted to the upper side ol' the same.

lt is provided upon its ends with segmental racks l P', engaging with pihions Q Q', secured respectivcly to the valve-stem G, and shaft of the indexlinger.

R is a valve-chamber attached to the upper side of the boss F, upon the outside of the shell, and carrying the steam-whistle S.

This chamber contains the spring valve l having its seat in the upper end of the steam-port U, which port extends through the boss and communicates with the annular space B.

Vis a second steam-port, alsa communicating with the valve-chamber, but entering the latter upon one side of the valve T.'

The operation is as follows:

As the oats D are raised and lowered bythe water in the space B, the -valve H and its stem are rotated and communicate motion to the index-finger 0t` the register through the medium of the'pinious and rackbar previously described.

By this arrangement, the height ct' the water is at all times accurately measured upon the dial.

If, however, the water rises too high within the boiler, the valvel H is turned until the radial port W therein registers wit-h the port Vin the boss, when the steam escapes from the annular space B through the valve-chamber and blows the whistle.

A low stage of water i's determined in a similar manner, that is to say, when the iioats fall, the radial port W.in the valve-registers with the port V, and the steam escapes to the whistle.'

It will of course be understood that'thc high orlow stage of the water, when the fwhistle is blown, is recorded upon the dial by the index-finger.

Then the pressure of steam within thc boiler exceeds the proper amount, it raises the valve l, and

escapes through the port U to the whistle.

By constructing the case with the two steam-ports arranged as previously described, opening directly into a common chamber containing the safety-valve, I do away with the necessity of separate pipes communicating from the boiler or exterior chamber with the whistle and saiety-valve.

I do not claim broadly the use of a float top operatc a disk-valve provided with two ports, one .indi-eating high :rnd theother low writer, ns1 am aware the sinne 3. The shell A, constructed with the boss F, for the is not new. valves and ports, and wit-h the annuler spooe for the Hoving thus described my invention, reception of the spherical floats, substantially as de- What I claim as new, :md desire to secure by Letscribed ond shown, for the purpose specified. ters Patent, s- 4. The arrangement, with rel. tion to the onse A, of

l. The combination of the pivoted toothed bar O the ports U V, Valve-chamber R, and vulves H T, as and pinions Q Q with the rotary valve H, and indexherein shown and described. finger of the register, for the -purpose specified. WILLIAM BUTTEEFIELD.

2. The combination of the floats C C, pivoted arms D D, and connecting-rods J J, with the case A, and Witnesses: slotted Volvo H, :is herein shown and described, for O. E. \VOODB`URY, the purpose specified., CARL SOHMID. 

